Machine for cutting off i-beams



(No Model.)

' G. H. SHELDON.

MACHINE. FOR CUTTING OFF I-BEAMS.

No. 552,784.. I Patented Janf 7,1896.

3 Q I w e \WH EEIEEE. 3E I 'JE hJP:

.UNITED STATES PATENT ()FFICE,

GEORGE II. SHELDON, 'OF Cl-IELMSFORD, MASSACHUSETTS.

MACHINE FOR CUTTING OFF I-BEAMS.

SPECIFICATION forming part of Letters Patent No. 552,784, dated January7, 1896.

Application filed May 20, 1895. Serial No. 549,871. (No model.)

To aZZ whom zit may concern.-

Be it known that I, GEORGE I'I. SHELDON, a citizen of the United States,and a resident of North Chelmsford, in the county of MiddleseX and Stateof Massachusetts, have invented new and useful Improvements in Machinesfor Cutting Off I-Beams, of which the following, taken in connectionwith the accompanying drawings, is a specification.

This invention relates to an improved machine for cutting off metalI-beams, and it is carried out as follows, reference being had to theaccompanying drawings, wherein-- Figure 1 represents a front elevationof the improved machine, showing the upper mov-.

able shear raised. Fig. 2 represents a side elevation of Fig. 1. Fig.Srepresents a front elevation of the improved machine, showing the uppershear in its lowest position. Fig. 4. represents a vertical section 011the line 4: 4, shown in Fig. 3; and Fig. 5 represents a vertical sectionon the line 5 5, shown in Fig.

Similar letters refer to similar parts wherever they occur on thedifferent parts of the drawings.

In the drawings, Arepresents the lower stationary bed of ametal-shearing machine to which is attached in a suitable manner thestationary lower shear B.

0 represents the vertically-movable head of a shearing-machine to whichis attached in a suitable manner the vertically-movable shear D, asshown.

The I-beam that is to be cut off by the shearing-machine has a web E andvertical end.

flanges E E, as is common in metal beams of this kind. The lowerstationary shear B is provided with recesses b b, adapted to receive thelower portions of the end flanges E E of the I-beam, as shown, and saidlower shear B has a middle flat portion 1), upon which the under side ofthe web E of the I-beam is supported during the shearing operation. In alike manner the upper movable shear D is provided with recesses (1 cl,adapted to fit, or nearly so, the upper portions of the end flanges E Eof the I-beam shown, and has likewise a middle flat portion 61, adaptedto fit against the upper side of the web E of the I-beam when brought incontact with it during the descent of said upper shear. The throw of themovable shear D is such as to cause its lower edge d to pass by theupper edge 6 of the stationary shear B a short distance, as shown insection in Fig. 4:, and thus cause the web E of the I-beam to beentirelycut through at or about the same time as the end flanges E E ofsaid I-beam are partially cut through by the movement of the upper shearrelative to the lower stationary one.

In the operation of cutting off I-beams by my improved machine andmethod the upper shear D is raised, after which the beam is laid on thelower shear B with its web E resting on the flat portion 1) and thelower portions of the end flanges E E resting in the recesses 17 b inthe said lower shear B, as fully shown in Figs. 1 and 2. The upper shearD is then made to descend sufficiently to cause its lower edge (1 topass entirely by the upper edge I) of the stationary shear B, by whichthe web E of the I-beam is cut entirely through, while at the same timethe end flanges E E of the I-beam are only partially cut through, asshown at e e in Fig. 5, leaving a middle portion (shown by the irregularline 6 in Fig. 5) unsheared; but owing to the nature of the metal ofwhich the I-beam is made, the action of the shears by partially cuttingthrough said end flanges, the middle uncut portion thereof will becaused to be torn or broken ofi, thus severing the ends of the I-beamwithoutcompleting the shearing process. By this arrangement and methodI'beams of any size may be cut off in a shearing-machine with a minimumof vertical movement of the head to which the movable shear is attached.

It is immaterial in a machine of this kind whether or not one or both ofthe shears are movable or whether or not the line of out is in avertical or other direction.

WVhat I wish to secure by Letters Patent and claim is A cutting offmachine for I-beams, consisting of shears 13, D, arranged in differentver* tical planes and having coincident recesses b, (1, adapted for thereception of the end flanges of the I-beams, each co-incident pair ofsaid recesses having a combined depth less than the length of the endflanges of the I-beam to be cut, the recesses d, d, being of less depthtwo subscribing Witnesses, on this 16th day than the recesses Z), 1),whereby at a full stroke of May, A. D. 1895.

of the shears the Web is completely severed but the flanges are onlypartially cut, sub- GEORGE II. SHELDON.

\Vitnesses:

5 stantially as described.

In testimony whereof I have signed my ALBAN ANDREN, name to thisspecification, in the presence of LAURITZ N. MILLER.

